<template>
  <view class="my-settle-container">
    <!-- 全选 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
    </label>
    <!-- 合计 -->
    <view class="amount-box">
      合计:<text class="amount">￥{{CheckedGoodsAmount}}</text>
    </view>
    <!-- 结算按钮 -->
    <view class="btn-settle" @click="settlement">
      结算({{checkedCount}})
    </view>
  </view>
</template>

<script>
  import {
    mapGetters,
    mapMutations,
    mapState
  } from 'vuex'

  export default {
    name: "my-settle",
    data() {
      return {
        // 倒计时的秒数
        seconds: 3,
        //定时器的id
        timer: null
      };
    },
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total', 'CheckedGoodsAmount']),
      ...mapGetters('m_user', ['addstr']),
      ...mapState('m_user', ['token']),
      ...mapState('m_cart', ['cart']),
      // 是否全选
      isFullCheck() {
        return this.total === this.checkedCount
      }
    },

    methods: {
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      ...mapMutations('m_user', ['updateRedirectInfo']),
      changeAllState() {
        this.updateAllGoodsState(!this.isFullCheck)
      },

      // 未填好的情况处理
      settlement() {
        // 没有勾选商品
        if (!this.checkedCount) {
          return uni.$showMsg('请选择要结算的商品！')
        }

        // 没有选择地址
        if (!this.addstr) {
          return uni.$showMsg('请选择收货地址！')
        }

        //没有登录
        if (!this.token) {
          // return uni.$showMsg('请先登录！')
          return this.delayNaviagte()
        }

        // 实现微信支付功能
        this.payOrder()
      },

      //展示倒计时的提示信息
      showTips(n) {
        //调用uni.showToast
        uni.showToast({
          // 不展示图标
          icon: 'none',
          //提示信息
          title: '请登录后再结算！' + n + '秒后自动跳转到登录页',
          //为页面添加透明遮罩，防止点击穿透,即提示框后面的选项点击不了
          mask: true,
          // 1.5秒后消失
          duration: 1500
        })
      },

      delayNaviagte() {
        this.seconds = 3
        // 此时秒数为3
        this.showTips(this.seconds)

        // 定时器,每秒减一,再调用提示
        // 将定时器id储存到timer中
        this.timer = setInterval(() => {
          this.seconds--

          //秒数归零时，清楚定时器          
          if (this.seconds <= 0) {
            clearInterval(this.timer)

            //跳转到my页面
            uni.switchTab({
              url: '/pages/my/my',
              //页面跳转成功后的回调函数
              success: () => {
                //调用vuex的updateRedirectInfo方法，储存跳转信息
                this.updateRedirectInfo({
                  // 跳转方式
                  openType: 'switchTab',
                  //从那个页面跳转过去的
                  from: '/pages/cart/cart'
                })
              }
            })
            // 终止
            return
          }
          this.showTips(this.seconds)
        }, 1000)
      },

      // 微信支付
      async payOrder() {
        // 准备参数
        const orderInfo = {
          order_price: 0.01,
          consignee_addr: this.addstr,
          goods: this.cart.filter(x => x.state).map(x => ({
            goods_id: x.goods_id,
            goods_number: x.goods.count,
            goods_price: x.goods_price
          }))
        }
        // 发起请求创建订单
        const {
          data: res
        } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
        // console.log(res);
        if (res.meta.status !== 200) {
          return uni.$showMsg('创建订单失败！')
        }
        // 获得订单编号
        const orderNumber = res.message.order_number

        //订单预支付
        //发起请求获取订单的支付信息
        const {
          data: res2
        } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', {
          order_number: orderNumber
        })
        //失败结果
        if (res2.meta.status !== 200) {
          return uni.$showMsg('预支付订单创建失败！')
        }
        // 获取订单支付相关的必要参数
        const payInfo = res2.message.pay
        // console.log(payInfo);

        //发起微信支付
        const [err, succ] = await uni.requestPayment(payInfo)
        //订单未支付
        if (err) {
          return uni.$showMsg('订单未支付！')
        }
        //完成支付，进一步查询支付结果
        const {
          data: res3
        } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', {
          order_number: orderNumber
        })
        //检测到订单未支付
        if (res3.meta.status !== 200) {
          return uni.$showMsg('订单未支付！')
        }
        //检测到支付完成
        uni.showToast({
          title: '支付完成！',
          icon: 'success'
        })
      }
    }
  }
</script>

<style lang="scss">
  .my-settle-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;

    .radio {
      display: flex;
      align-items: center;
    }

    .amount-box {
      .amount {
        color: #C00000;
        font-weight: bold;
      }
    }

    .btn-settle {
      background-color: #C00000;
      height: 50px;
      color: white;
      line-height: 50px;
      padding: 0 10px;
      min-width: 100px;
      text-align: center;
    }
  }
</style>